Spatial Graphics

spatial_data <- readRDS("../data/full_data_with_coords.RDS")

filtered_spatial <- spatial_data[!is.na(spatial_data$Latitude) & !is.na(spatial_data$Longitude), ]

filtered_spatial$symbol_type <- ifelse(filtered_spatial$tree_dead == 1, "x", "circle")

library(plotly)

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# Interactive plot with time slider
time_plot <- plot_ly(
  data = filtered_spatial,
  x = ~Latitude,
  y = ~Longitude,
  color = ~Species,
  symbol = ~symbol_type,  
  symbols = c("circle" = "circle", "x" = "x"),  
  size = ~DBH,
  frame = ~Year,
  type = 'scatter',
  mode = 'markers',
  text = ~paste("Species: ", Species, "<br>DBH: ", round(DBH, 2)),  
  hoverinfo = 'text', 
  marker = list(opacity = 0.7)
) %>%
  layout(
    title = "Tree Locations by Year",
    yaxis = list(title = "Longitude"),
    xaxis = list(title = "Latitude"),
    showlegend = TRUE
  )

time_plot

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